Struct UntrimmableColumns

pub(crate) struct UntrimmableColumns {
    pub equals: Vec<Cow<'static, str>>,
    pub prefixes: Vec<Cow<'static, str>>,
    pub suffixes: Vec<Cow<'static, str>>,
}

A list of (lowercase) column names that persist will always retain stats for, even if it means going over the stats budget.

Fields

equals: Vec<Cow<'static, str>>

Always retain columns whose lowercased names exactly equal any of these strings.

prefixes: Vec<Cow<'static, str>>

Always retain columns whose lowercased names start with any of these strings.

suffixes: Vec<Cow<'static, str>>

Always retain columns whose lowercased names end with any of these strings.

Implementations

impl UntrimmableColumns

pub(crate) fn should_retain(&self, name: &str) -> bool

Trait Implementations

impl Arbitrary for UntrimmableColumns

type Parameters = (<Vec<Cow<'static, str>> as Arbitrary>::Parameters, <Vec<Cow<'static, str>> as Arbitrary>::Parameters, <Vec<Cow<'static, str>> as Arbitrary>::Parameters)

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = Map<(<Vec<Cow<'static, str>> as Arbitrary>::Strategy, <Vec<Cow<'static, str>> as Arbitrary>::Strategy, <Vec<Cow<'static, str>> as Arbitrary>::Strategy), fn((Vec<Cow<'static, str>>, Vec<Cow<'static, str>>, Vec<Cow<'static, str>>)) -> UntrimmableColumns>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_top: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for UntrimmableColumns

fn clone(&self) -> UntrimmableColumns

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UntrimmableColumns

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for UntrimmableColumns

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for UntrimmableColumns

fn eq(&self, other: &UntrimmableColumns) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for UntrimmableColumns

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for UntrimmableColumns

impl StructuralPartialEq for UntrimmableColumns